MySQL order by string with numbers

Question

I have strings such as M1 M3 M4 M14 M30 M40 etc (really any int 2-3 digits after a letter) When I do \" ORDER BY name \" this returns:

M1, M14, M3

Answer 1

Another method i used in my project is:

SELECT * FROM table_name ORDER BY LENGTH(col_name) DESC, col_name DESC LIMIT 1